using namespace std;
#include <iostream>
#include <string>

int fun()
{
    int i = 0;
    int sum = 0;
    for(; i < 100; i++)
    {
        sum += 1;
    }
    return sum;
}
int main()
{
    cout << "hello world" << endl;
    int result = fun();
    cout << "result: " << result << endl;
    return 0;
}
